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This is 2-gauge, 3-conductor non-metallic sheathed cable with a bare ground, the heavy-duty end of the NM-B line used for large residential branch circuits and feeder runs. Copper conductors are PVC-insulated with a nylon jacket rated 90°C dry, and the whole assembly is rated 600 volts, though code limits ampacity to the 60°C column. It meets UL 83, UL 719, ASTM and federal A-A-59544 specs and is lead-free and RoHS compliant. It is the cable for high-current loads like ranges, subpanels and large HVAC equipment, where lighter 6, 8 and 10 gauge NM-B will not carry the load.
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This is 2 AWG Type NM-B non-metallic sheathed cable with three conductors plus a ground. It is used in normally dry installations in residential wiring, as branch circuits for outlets, lighting and other residential loads. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness. It is equivalent to Romex NM-B.
The conductors are stranded annealed soft bare copper. Insulation is color-coded PVC with a nylon covering that meets the thickness required of Type THHN. The ground is soft bare copper. A 30 mil color-coded PVC sheath is applied over the completed assembly.
The cable is rated at 600 volts. Its conductor temperature rating is 90°C dry, but its ampacity is limited to 60°C under NEC 2008 and NEC 2011. Its applications are outlined in NEC 2008 and NEC 2011 Article 334. The cable is lead free and RoHS compliant.
